lightbulb
nounUK /ˈlaɪt.bʌlb/
US /ˈlaɪt.bʌlb/
A lightbulb is a small glass thing that makes light when you turn it on.
Dad changed the lightbulb in the kitchen because it stopped working.
SYNONYMS
RELATED WORDS
OTHER MEANINGS
2. A sudden clever idea or inspiration.
She had a lightbulb moment and solved the puzzle.
3. The rounded glass part of a lamp or light fixture.
The lightbulb glowed softly above the table.
4. A small bulb-shaped object, such as the tip of a thermometer.
The lightbulb-shaped end of the thermometer showed her temperature.